Learn Farsi: نود و سه ماشین جدید در خیابان است.

In Farsi, we build numbers like ninety-three by saying the tens first, followed by the ones, just like in English. We connect them with the word و (meaning "and"), which is pronounced "o" here. So, نود و سه is literally "ninety and three" (navad-o se).

Why is it just ماشین (car) and not a plural form for "cars"?

In Farsi, after a number, the noun always stays in its singular form! So instead of saying "ninety-three cars", you say "ninety-three car" (نود و سه ماشین).

How are the words for "car" (ماشین) and "new" (جدید) connected?

They are connected by the Ezafe. In Farsi, the adjective comes after the noun, and they are linked by a short "e" sound. So "new car" is pronounced māshin-e jadid. This "e" sound isn't written as a separate letter here, but you must say it to link the words.

If there are ninety-three cars, why does the sentence end with است (is) instead of a plural verb for "are"?

There are two rules working together here. First, because numbers take a singular noun (ماشین), the verb often matches that singular noun. Second, in Farsi, non-living things (like cars) usually take a singular verb anyway, even when we are talking about a group of them.